Black diamond Kelly Canyon, ID
Grandma's House drops 280 vertical feet over 1,185 feet of skiing, with a steepest pitch of 26° about 140 feet below the top. That's steeper than 31% of the 4,740 black diamond runs we've measured in North America, and the 10th steepest of 49 named runs at Kelly Canyon. It faces northwest.
Facing northwest at an average 14°, Grandma's House gets about 58% of the winter sun that flat ground at Kelly Canyon does, December through March. That's shadier than 86% of the runs we've measured, and the 6th shadiest named run at Kelly Canyon. Its top sits at 6,560 feet.
Shaded snow stays colder and drier, so it holds powder longer after a storm and is slower to crust over or turn to slush in spring. Shading from ridges and trees isn't counted yet.
under 25°25–35°35–45°45°+ Hover to follow the line on the map.
Measured by ZRankings from 1-meter USGS lidar. Steepest pitch is the steepest stretch of about 50 vertical feet along the skiable line. Run lines come from OpenStreetMap and can sit a little off the skied path.